Summary

This is a technical specification document for the Homeland Security Cutter Light (HSCL) shell expansion project, prepared by the United States Coast Guard under the Deputy Commandant for Systems. The document serves as a reference plan and materials list for the structural design and construction details of the vessel's shell expansion.

The document contains detailed architectural and engineering drawings depicting plan views, elevations, sections, and construction details for the HSCL shell expansion. Key specifications include 12-inch and 18-inch frame spacing throughout the vessel, multiple working deck configurations, upper and lower cones, side shells, and various structural details. The drawings illustrate the port and starboard shell configurations, frame arrangements, and detailed cross-sections showing working deck placement, side shell construction, and structural reinforcement locations. All drawings are provided at scale (1/24"=1'0" and 1/2"=1'0") with comprehensive dimensioning. The title sheet indicates this is a technical drawing package developed by the Office of Naval Engineering at HSCL to support vessel development and construction planning.